In logic, a logical connective (also called a logical operator, sentential connective, or sentential operator) is a symbol or word used to connect two or more sentences (of either a formal or a natural language) in a grammatically valid way, such that the value of the compound sentence produced depends only on that of the original sentences and on the meaning of the connective. 

The most common logical connectives are binary connectives (also called dyadic connectives) which join two sentences which can be thought of as the function's operands. Also commonly, negation is considered to be a unary connective. 

Logical connectives along with quantifiers are the two main types of logical constants used in formal systems such as propositional logic and predicate logic. Semantics of a logical connective is often, but not always, presented as a truth function. 

A logical connective is similar to but not equivalent to a conditional operator. 

In the grammar of natural languages two sentences may be joined by a grammatical conjunction to form a "grammatically" compound sentence. Some but not all such grammatical conjunctions are truth functions. For example, consider the following sentences: 

The words "and" and "so" are "grammatical" conjunctions joining the sentences (A) and (B) to form the compound sentences (C) and (D). The "and" in (C) is a "logical" connective, since the truth of (C) is completely determined by (A) and (B): it would make no sense to affirm (A) and (B) but deny (C). However, "so" in (D) is not a logical connective, since it would be quite reasonable to affirm (A) and (B) but deny (D): perhaps, after all, Jill went up the hill to fetch a pail of water, not because Jack had gone up the hill at all. What are the answers to this following set of questions: 1. What is a logical connective?
2. What is it also known as?
3. What are the most common connectives?
4. Is a logic connective the same as a conditional operator?
5. What is negation?
6. What can be used in natural language to join two sentences?
7. Are grammatical conjunctions truth functions?
8. What are examples of gramatical conjunctions?
9. Who went up the hill?
10. What was she after?
11. Did jack go up the hill?
Answer: 1. a symbol or word used to connect two or more sentences
2. a logical operator
3. binary connectives
4. its similar to but not equivalent
5. a unary connective.
6. a grammatical conjunction
7. Some
8. The words "and" and "so" are "grammatical" conjunctions joining the sentences (A) and (B) to form the compound sentences (C) and (D).
9. Jill
10. a pail of water
11. yes

CHAPTER I 

ON THE HOUSEBOAT 

"Say, Tom, what's that big thing coming down the river?" 

"I'm sure I don't know, Sam. It's big enough to be a house." replied Tom Rover. 

"Maybe it is a house," came from Dick Rover, who was standing beside his brothers on the rear deck of the houseboat which was taking them down the Mississippi River. 

"A house?" broke in a distinctly German voice. "Did you mean to said dere vos a house floating der rifer town, Dick Rofer?" 

"Why not, Hansy, my boy?" replied fun-loving Tom Rover, before his big brother could answer. "Hasn't a house got a right to take a float if it wants to? Perhaps it's out for its health." 

"Ach, you vos choking, Tom!" cried Hans Mueller. "Of a house been der rifer on, dere peen somedings wrong mit him alretty." 

"It's a lumber raft, Hans," said Dick. "And a whopping big one, too," he added, as he took another look at the object that was approaching the houseboat. 

"Hope it doesn't give us such a close shave as that raft we met two days ago," said Sam anxiously. "I was almost certain they were going to run into us." 

"They have got no business to run so close to this houseboat," grumbled Tom. "They know well enough that we can't turn out of our course very well. I think some of those lumbermen are the toughest kind of citizens." 

"If they get too close, I'll shout a warning through the megaphone," went on Dick, after a brief pause. "It certainly does look as if they intended to crowd us," he continued anxiously.  What are the answers to this following set of questions: 1. What was it they saw in the disatance
2. What did they think it was?
3. What were they on when they saw it?
4. And where was it?
5. Who was first to suggest what it might be?
6. Who was first to agree with him?
7. Did anyone doubt the were right?
8. Who disagreed?
9. What was Tom's relation to Dick?
10. Who was older?
11. What was Sam's mood?
12. Why ?
13. Who tried to calm his fears?
Answer: 1. A lumber raft.
2. A house
3. A houseboat
4. the Mississippi River.
5. Tom Rover
6. Dick Rover
7. Yes
8. Hansy
9. His brother.
10. unknown
11. Anxious.
12. He feared they would run in to them.
13. Dick

Flea and the rest of Red Hot Chili Peppers will jump on to the stage, compliments of fellow performer Bruno Mars, at next month's Super Bowl halftime show. 

The news was announced Saturday during Fox's coverage of an NFC divisional playoff game. 

Mars, a Grammy-winning pop singer, invited the Chili Peppers to join him for the Super Bowl XLVIII festivities on February 2 at MetLife Stadium in East Rutherford, New Jersey. 

"One of the most successful acts in rock history, Red Hot Chili Peppers, which is singer Anthony Kiedis, bassist Flea, drummer, Chad Smith, and guitarist Josh Klinghoffer, have sold more than 60 million albums, including five multi-platinum LPs, and won six Grammy Awards," the NFL said in a press release. 

Their hit songs include "Give It Away," "Scar Tissue," "Californication" and "Suck My Kiss." 

Kiedis and Flea, born Michael Balzary, are more than 20 years older than Mars. Their band has pioneered a bold style of rock infused with funk and rap. 

His 50th birthday bash in October 2012 gave Flea time to take stock of his life, he told CNN. 

"I'm definitely wiser, and less likely to make gigantic blunders of an intellectual, spiritual, emotional or physical type," he said. "... But more than anything the passion for the things that I really care about like playing music, and being kind, and children, and the things I love -- sports, books, art -- my passion for all these things has deepened." 

Expectations for Super Bowl halftime performances are always high.  What are the answers to this following set of questions: 1. Who is the main act for Superbowl XLVIII?
2. Who did invite to perform with him?
3. Who is their lead vocalist?
4. Who plays the bass for them?
5. Who is Chad Smith?
6. And who plays guitar for the Chili Peppers?
7. Are they a successful act?
8. What genre of music do they play?
9. How many records have been purchased?
10. Have they earned any Grammys?
11. How many?
12. How many?
13. What was one name of a top song?
14. Another?
15. What is Flea's real name?
16. How old is he?
17. Are people excited for the performance?
18. Where is the Superbowl being played?
19. Which is where, exactly?
20. When was this information broadcasted?
Answer:
1. Bruno Mars
2. The Red Hot Chili Peppers
3. Anthony Kiedis
4. Flea
5. The drummer
6. Josh Klinghoffer
7. Yes
8. Rock
9. More than 60 million
10. Yes
11. Five
12. Six
13. Give It Away
14. Californication
15. Michael Balzary
16. 50
17. Yes
18. MetLife Stadium
19. East Rutherford, New Jersey.
20. During Fox's coverage of an NFC divisional playoff game.